If you want to support push notifications over a Wi-Fi network, configure a firewall rule outbound for TCP port 5223.

Use the Set-CsPushNotificationConfiguration cmdlet to enable push notifications to the Apple Push Notification Service (APNS) and Microsoft Push Notification Service (MPNS). This feature is disabled by default.

Use the Test-CsFederatedPartner cmdlet to test the federation configuration and the Test-CsMCXPushNotification cmdlet to test push notifications.